Concrete-heating machine.



PATENTBD MAY 14, 1907.

R. c. HUPPMAN. CONCRETE HEATING MAGHINE.

APPLIOATION FILED Mums, 19o?.

2 SHEETS-SHEET 1.

wihw ses Mfw WWfZf/ No; 853.456. PATENTED MAY 14, 1907. C. C'HUFPMAN.CONCRETE HEATINGV MACHINE.

APPLICATION FILED FEB. 19, 1907.

2 SHEETS-SHEET Z.

ROBERT C. I-IUFFMAN, OF BALTIMORE, MARYLAND'.

CONCRETEf-HEATNG MACHINE.

Specification of Letters Patent. V

Patented May 14, 1907.

Application filed Frbriiary 19, 1907. Serial No. 358,161.

T0 all uffi/0m it may concern:

Beit known that I, ROBERT O. I-IUEFMAN,v

a citizen ofthe United States, residing at Baltimore city, State ofMaryland, have invented certain new and useful Improvements inConcrete-Heating Machines, of which the following is a specification.

My invention relates to an improvement in concrete heating machines, theobject being to provide a machine for heating concrete in cold weather.

It is a well known fact that concrete cannot be successfully mixed in atemperature below 32 Fr. on account of its tendency to freeze, and whenfrozen it loses its strength and' utility.

To prevent the freezing of concrete while in the course of being mixed,I have invented this device, thus making it possible to mix concrete incold weather at a temperature of below 32, without its becomingdeteriorated.

The device is particularly adapted to be i used in the mixing ofconcrete in the conexposed to a cbld temperature, and whereby for thereasons stated cannot be successfully accomplished when thetemperatureis below 32. In the construction of bridges, tunnels and the like aswell as in any and all other construction where concrete is used, thevloss of time incurred by reason of cold weather, wherein the concretecannot be mixed, is often the cause of financial loss.

To obviate to a great extent such delays from the cause stated and toprevent such financial loss as is ordinarily incurred, thereby I haveinvented and constructed this device.

My invention consists in certain new and novel features of constructionand combination of parts, which will be hereinafter described andpointed out in the claims.

Referring to the accompanying drawings in which like letters and figuresof reference indicate corresponding parts in each of the several views.Figure 1, is a side elevation, showing the position of the device whenthe contents is discharged. Fig. 2, is an end view showing the coverraised; Fig. 3, is a top plan view with the cover removed. Fig. 4S, is aside elevation showing the cover raised Fig. 5, is an end view with thatpart of the body portion removed.

A is a longitudinal box or body part; 1 is a base or stand; 2 is asupply pipe; 3 is a trunnion into which the feed pipe is extended and` 2is a cap secured on the end of the supply pipe 2; 4 are clamps whichsecure the body portion A to the trunnion 3, which trunnion is pivotallysecured to the base or stand at 5 6 is a cover hinged to the top part ofthe body portion by the hinges 7; the body part A is provided with adoor 8 in the rear end thereof, which door` is hinged to the top endportion of the body part A at 9; secured on the top rear end of the body.part A by means of screws 10 is a cover stop 11; 12 and 1.3 are valvessecured in the pipes 14 and 15 3 16 and 17 are ells, the pipe 14 isvertically extended by the use of the ell 16 and the pipe 15 is cxtendedtransversely under the body portion near the fron-t end to the centerthereof by use of the ell 17 18 is an ordinary staple secured. to theend of the hook 19, which hook engages with the end of the body part A,by any suitable means to prevent the vbody part from being tilted beyonda desired angle.

The pipe 1 4 is secured to the supply pipe 2 by means of the swivel Tfitting 20 and is lon-- gitudinally extended to the rear end of the bodypart A, where by the use of an ell 16 it is vertically extended to thetop of the body part, secured on the end thereof is a ball and socketjoint 21, whereby the pipe is .extended horizontally across the top endportion of the body part A. Secured to the horizontal portion of thepipe 14 by means of the union joints 22 are a series of longitudinalarranged pipes 23, which are secured to the cover 6, by

means of the clamps 24 these pipes are slotted at suitable distances asindicated by 25, the free end of the pipes being closed by means of thecaps 26; the pipe 15 is similarly secured on the supply pipe 2 by meansof a similar T fitting 27; on the opposite end of the pipe 15 is securedan ell 17, by reason of which the pipe 15 is extended transverselyacross the front end of the body part A to the center thereof, on theend of the said transverse extensionof the said pipe 15 is securedanother ell 2S, whereby the said pipe is continued vertically and joinedto a T fitting 29. The said T fitting is connected with a series ofshort sections of pipe 30 5 additional T fittings 31 .are used toconnect a series of'longit-udinal pipe sections 32 extending and lyingin the bottom of the body part A, and are similarly slotted as are thosesecured to the top cover which are similarly designated 25, (as shown inFig. 3); the free ends of these pipes are closed by means of caps (notshown) but similar to those designated 26 of the cover; by the use ofadditional ell iittings 33 and T fittings 34, a series of pipes 35 areconstructed transversely across the front end as are also a series ofpipes longitudinally constructed within the sides of the body part A, asindicated by 36 as shown in Fig. 4, and are secured to the inner sideWalls of the body part A by similar clamps 24 as are those of the coverwhich are similarly designated; the free ends of these pipes are closedby means of the caps 37. These pipes as Well as those extendedtransversely across the end are similarly slotted as are those of thecover in the bottom of the body part and which slots are similarlydesignated 25, the object of which will be hereinafter explained.

My invention is operative as follows: The proportionate equalities ofbroken stone, sand and cement are placed in the body part A, which isthen closed by means of the cover 6; live steam is then dischargedthrough the supply pipe 2, and by reason of the valves 12 and 13 thisdischarge is regulated. Steam entering through supply pipe 2 passesthrough'pipe 14 and through ball and socket joint 21 to the extension ofpipe 14 leading to the series of pipes secured to the cover and byreason of the slots 25 in the said pipes, live steam is dischargedtherethrough and into the body p art. Steam entering through supply pipe2 passes through pipe 15, which connects with the series of pipes 35located in the iront end of the body part A, and by reason oftheconnections with these pipes as has already been explained, the steampasses into the series of longitudinal pipes 32 secured within thebottom part A, and in a similar manner, and by the use of similarconnections and fittings, the pipes 36 secured to the inner side Wallsare connected with the pipes 35 and through which and by reason of thesaid connections, live steam is discharged therein, and through theslots 23, as is the case with all the other pipes; by reason ofdischarging live steam into the body part in the manner described,'thecontents become thoroughly heated and partially mixed and the steamcondensing therein, supply the Water necessary to the mixing of theconcrete and stone becoming heated retains sufiicient heat to permit thefurther mixing of the concrete in a temperature which Without the use ofmy device would be prohibitive for the reasons previously given.

Slight changes mightbe resorted to in the form and arrangement of theseveral parts described, Wit-hout departing from the spirit and scope olmy invention, hence I do not desire to limit myself to the exact.const-ruction as herein set forth, but;

Having described my invention, what I claim as new and desire to secureby Letters Patent, is: Y

1. A concrete heating machine, comprising a longitudinal body part, of abase, a trunnion pivotally secured to the base, means for securing thebody part to the trunnion, a supply pipe, an additional pipe leadingfrom the said supply pipe, longitudinal extended pipes provided withslots cut therein and secured within the said body part on the bottomthereof, means for connecting `the said longitudinal extended pipes withthe said pipe leading from the said supply pipe and a valve on the saidpipe for contro ling the discharge of steam therethrough, substantiallyas described.

2. A concrete heating machine, comprising a longitudinal body part, of abase, a trunnion pivotally secured to the base, means for securing thebody part to the trunnion, a supply pipe, an additional pipe leadingfrom the said supply pipe, pipes longitudinally extended and providedwith slots cut therein in the bottom part of the said body part, similarpipes extending transversely across the end portion of the said bodypart, means for connecting the said pipe longitudinally extended in thebottom part with those transversely extended across thc end portion,similar pipes longitudinally extended and secured to the inner sideWalls of' the said body part, means for connecting lthe said pipesWiththose transversely extended across the end portion, means forconnecting the said pipe ,leading from the said supply pipe with thosetransversely extended across the end portion and means on the said pipeleading from the said supply pipe for regulating the discharge of steamtherethrough, substantially as described.

3. A concrete heating machine, comprising a longitudinal body part andprovided with a cover hinged thereto, a base, a trunnion pivotallysecured to the base, means for securing the body part to the trunnion, asupply pipe, slotted pipes longitudinally extended and secured to theinner side of the said cover, a pipe extended longitudinally along thelower side of the body part and connected with the said supply'pipe,means on the free end of the said pipe for continuing the samevertically, a hinge joint on the free end of the said vertical extensionfor extending the said pipe transversely across the top of the said bodypart near the end portion thereof and means for connecting naw.

the said transverse extension With the len- In testimony whereof I affixmy signature gitudlinalfslotted pipes seeuredlto the m in presence oftwo Witnesses.

ner si e o the cover, a steam va Ve secure on the Said longitudinal pipeleading from ROBERT C- HUFFMAN- the supply pipe for regulating thedischarge Witnesses:

ofsteam therethrough, substantially as de- MARY M. MAGRAW, scribed. E.WALTON BREWINGTON.

